apps/s_server.c

   1 /* apps/s_server.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #ifdef NO_STDIO
  65 #define APPS_WIN16
  66 #endif
  67 #include "lhash.h"
  68 #include "bn.h"
  69 #define USE_SOCKETS
  70 #include "apps.h"
  71 #include "err.h"
  72 #include "pem.h"
  73 #include "x509.h"
  74 #include "ssl.h"
  75 #include "s_apps.h"
  76
  77 #ifndef NOPROTO
  78 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export,int keylength);
  79 static int sv_body(char *hostname, int s, char *context);
  80 static int www_body(char *hostname, int s, char *context);
  81 static void close_accept_socket(void );
  82 static void sv_usage(void);
  83 static int init_ssl_connection(SSL *s);
  84 static void print_stats(BIO *bp,SSL_CTX *ctx);
  85 #ifndef NO_DH
  86 static DH *load_dh_param(void );
  87 static DH *get_dh512(void);
  88 #endif
  89 /* static void s_server_init(void);*/
  90 #else
  91 static RSA MS_CALLBACK *tmp_rsa_cb();
  92 static int sv_body();
  93 static int www_body();
  94 static void close_accept_socket();
  95 static void sv_usage();
  96 static int init_ssl_connection();
  97 static void print_stats();
  98 #ifndef NO_DH
  99 static DH *load_dh_param();
 100 static DH *get_dh512();
 101 #endif
 102 /* static void s_server_init(); */
 103 #endif
 104
 105
 106 #ifndef S_ISDIR
 107 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
 108 #endif
 109
 110 #ifndef NO_DH
 111 static unsigned char dh512_p[]={
 112         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 113         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 114         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 115         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 116         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 117         0x47,0x74,0xE8,0x33,
 118         };
 119 static unsigned char dh512_g[]={
 120         0x02,
 121         };
 122
 123 static DH *get_dh512()
 124         {
 125         DH *dh=NULL;
 126
 127         if ((dh=DH_new()) == NULL) return(NULL);
 128         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 129         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 130         if ((dh->p == NULL) || (dh->g == NULL))
 131                 return(NULL);
 132         return(dh);
 133         }
 134 #endif
 135
 136 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 137
 138 #undef BUFSIZZ
 139 #define BUFSIZZ 16*1024
 140 static int bufsize=32;
 141 static int accept_socket= -1;
 142
 143 #define TEST_CERT       "server.pem"
 144 #undef PROG
 145 #define PROG            s_server_main
 146
 147 #define DH_PARAM        "server.pem"
 148
 149 extern int verify_depth;
 150
 151 static char *cipher=NULL;
 152 static int s_server_verify=SSL_VERIFY_NONE;
 153 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 154 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 155 #ifdef FIONBIO
 156 static int s_nbio=0;
 157 #endif
 158 static int s_nbio_test=0;
 159 static SSL_CTX *ctx=NULL;
 160 static int www=0;
 161
 162 static BIO *bio_s_out=NULL;
 163 static int s_debug=0;
 164 static int s_quiet=0;
 165
 166 #if 0
 167 static void s_server_init()
 168         {
 169         cipher=NULL;
 170         s_server_verify=SSL_VERIFY_NONE;
 171         s_dcert_file=NULL;
 172         s_dkey_file=NULL;
 173         s_cert_file=TEST_CERT;
 174         s_key_file=NULL;
 175 #ifdef FIONBIO
 176         s_nbio=0;
 177 #endif
 178         s_nbio_test=0;
 179         ctx=NULL;
 180         www=0;
 181
 182         bio_s_out=NULL;
 183         s_debug=0;
 184         s_quiet=0;
 185         }
 186 #endif
 187
 188 static void sv_usage()
 189         {
 190         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 191         BIO_printf(bio_err,"\n");
 192         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 193         BIO_printf(bio_err," -context arg  - set session ID context\n");
 194         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 195         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 196         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 197         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 198         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 199         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 200         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 201         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 202 #ifdef FIONBIO
 203         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 204 #endif
 205         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 206         BIO_printf(bio_err," -debug        - Print more output\n");
 207         BIO_printf(bio_err," -state        - Print the SSL states\n");
 208         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 209         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 210         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 211         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 212         BIO_printf(bio_err," -quiet        - No server output\n");
 213         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 214         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 215         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 216         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 217         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 218         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 219         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 220         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 221         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 222         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 223         }
 224
 225 static int local_argc=0;
 226 static char **local_argv;
 227 static int hack=0;
 228
 229 int MAIN(argc, argv)
 230 int argc;
 231 char *argv[];
 232         {
 233         short port=PORT;
 234         char *CApath=NULL,*CAfile=NULL;
 235         char *context = NULL;
 236         int badop=0,bugs=0;
 237         int ret=1;
 238         int off=0;
 239         int no_tmp_rsa=0,nocert=0;
 240         int state=0;
 241         SSL_METHOD *meth=NULL;
 242 #ifndef NO_DH
 243         DH *dh=NULL;
 244 #endif
 245
 246 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 247         meth=SSLv23_server_method();
 248 #elif !defined(NO_SSL3)
 249         meth=SSLv3_server_method();
 250 #elif !defined(NO_SSL2)
 251         meth=SSLv2_server_method();
 252 #endif
 253
 254         local_argc=argc;
 255         local_argv=argv;
 256
 257         apps_startup();
 258         s_quiet=0;
 259         s_debug=0;
 260
 261         if (bio_err == NULL)
 262                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 263
 264         verify_depth=0;
 265 #ifdef FIONBIO
 266         s_nbio=0;
 267 #endif
 268         s_nbio_test=0;
 269
 270         argc--;
 271         argv++;
 272
 273         while (argc >= 1)
 274                 {
 275                 if      ((strcmp(*argv,"-port") == 0) ||
 276                          (strcmp(*argv,"-accept") == 0))
 277                         {
 278                         if (--argc < 1) goto bad;
 279                         if (!extract_port(*(++argv),&port))
 280                                 goto bad;
 281                         }
 282                 else if (strcmp(*argv,"-verify") == 0)
 283                         {
 284                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 285                         if (--argc < 1) goto bad;
 286                         verify_depth=atoi(*(++argv));
 287                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 288                         }
 289                 else if (strcmp(*argv,"-Verify") == 0)
 290                         {
 291                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 292                                 SSL_VERIFY_CLIENT_ONCE;
 293                         if (--argc < 1) goto bad;
 294                         verify_depth=atoi(*(++argv));
 295                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 296                         }
 297                 else if (strcmp(*argv,"-context") == 0)
 298                         {
 299                         if (--argc < 1) goto bad;
 300                         context= *(++argv);
 301                         }
 302                 else if (strcmp(*argv,"-cert") == 0)
 303                         {
 304                         if (--argc < 1) goto bad;
 305                         s_cert_file= *(++argv);
 306                         }
 307                 else if (strcmp(*argv,"-key") == 0)
 308                         {
 309                         if (--argc < 1) goto bad;
 310                         s_key_file= *(++argv);
 311                         }
 312                 else if (strcmp(*argv,"-dcert") == 0)
 313                         {
 314                         if (--argc < 1) goto bad;
 315                         s_dcert_file= *(++argv);
 316                         }
 317                 else if (strcmp(*argv,"-dkey") == 0)
 318                         {
 319                         if (--argc < 1) goto bad;
 320                         s_dkey_file= *(++argv);
 321                         }
 322                 else if (strcmp(*argv,"-nocert") == 0)
 323                         {
 324                         nocert=1;
 325                         }
 326                 else if (strcmp(*argv,"-CApath") == 0)
 327                         {
 328                         if (--argc < 1) goto bad;
 329                         CApath= *(++argv);
 330                         }
 331                 else if (strcmp(*argv,"-cipher") == 0)
 332                         {
 333                         if (--argc < 1) goto bad;
 334                         cipher= *(++argv);
 335                         }
 336                 else if (strcmp(*argv,"-CAfile") == 0)
 337                         {
 338                         if (--argc < 1) goto bad;
 339                         CAfile= *(++argv);
 340                         }
 341 #ifdef FIONBIO
 342                 else if (strcmp(*argv,"-nbio") == 0)
 343                         { s_nbio=1; }
 344 #endif
 345                 else if (strcmp(*argv,"-nbio_test") == 0)
 346                         {
 347 #ifdef FIONBIO
 348                         s_nbio=1;
 349 #endif
 350                         s_nbio_test=1;
 351                         }
 352                 else if (strcmp(*argv,"-debug") == 0)
 353                         { s_debug=1; }
 354                 else if (strcmp(*argv,"-hack") == 0)
 355                         { hack=1; }
 356                 else if (strcmp(*argv,"-state") == 0)
 357                         { state=1; }
 358                 else if (strcmp(*argv,"-quiet") == 0)
 359                         { s_quiet=1; }
 360                 else if (strcmp(*argv,"-bugs") == 0)
 361                         { bugs=1; }
 362                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 363                         { no_tmp_rsa=1; }
 364                 else if (strcmp(*argv,"-www") == 0)
 365                         { www=1; }
 366                 else if (strcmp(*argv,"-WWW") == 0)
 367                         { www=2; }
 368                 else if (strcmp(*argv,"-no_ssl2") == 0)
 369                         { off|=SSL_OP_NO_SSLv2; }
 370                 else if (strcmp(*argv,"-no_ssl3") == 0)
 371                         { off|=SSL_OP_NO_SSLv3; }
 372                 else if (strcmp(*argv,"-no_tls1") == 0)
 373                         { off|=SSL_OP_NO_TLSv1; }
 374 #ifndef NO_SSL2
 375                 else if (strcmp(*argv,"-ssl2") == 0)
 376                         { meth=SSLv2_server_method(); }
 377 #endif
 378 #ifndef NO_SSL3
 379                 else if (strcmp(*argv,"-ssl3") == 0)
 380                         { meth=SSLv3_server_method(); }
 381 #endif
 382 #ifndef NO_TLS1
 383                 else if (strcmp(*argv,"-tls1") == 0)
 384                         { meth=TLSv1_server_method(); }
 385 #endif
 386                 else
 387                         {
 388                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 389                         badop=1;
 390                         break;
 391                         }
 392                 argc--;
 393                 argv++;
 394                 }
 395         if (badop)
 396                 {
 397 bad:
 398                 sv_usage();
 399                 goto end;
 400                 }
 401
 402         if (bio_s_out == NULL)
 403                 {
 404                 if (s_quiet && !s_debug)
 405                         {
 406                         bio_s_out=BIO_new(BIO_s_null());
 407                         }
 408                 else
 409                         {
 410                         if (bio_s_out == NULL)
 411                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 412                         }
 413                 }
 414
 415 #if !defined(NO_RSA) || !defined(NO_DSA)
 416         if (nocert)
 417 #endif
 418                 {
 419                 s_cert_file=NULL;
 420                 s_key_file=NULL;
 421                 s_dcert_file=NULL;
 422                 s_dkey_file=NULL;
 423                 }
 424
 425         SSL_load_error_strings();
 426         SSLeay_add_ssl_algorithms();
 427
 428         ctx=SSL_CTX_new(meth);
 429         if (ctx == NULL)
 430                 {
 431                 ERR_print_errors(bio_err);
 432                 goto end;
 433                 }
 434
 435         SSL_CTX_set_quiet_shutdown(ctx,1);
 436         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 437         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 438         SSL_CTX_set_options(ctx,off);
 439         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 440
 441         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 442
 443         SSL_CTX_sess_set_cache_size(ctx,128);
 444
 445 #if 0
 446         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 447 #endif
 448
 449 #if 0
 450         if (s_cert_file == NULL)
 451                 {
 452                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 453                 goto end;
 454                 }
 455 #endif
 456
 457         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 458                 (!SSL_CTX_set_default_verify_paths(ctx)))
 459                 {
 460                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 461                 ERR_print_errors(bio_err);
 462                 /* goto end; */
 463                 }
 464
 465 #ifndef NO_DH
 466         /* EAY EAY EAY evil hack */
 467         dh=load_dh_param();
 468         if (dh != NULL)
 469                 {
 470                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 471                 }
 472         else
 473                 {
 474                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 475                 dh=get_dh512();
 476                 }
 477         BIO_flush(bio_s_out);
 478
 479         SSL_CTX_set_tmp_dh(ctx,dh);
 480         DH_free(dh);
 481 #endif
 482
 483         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 484                 goto end;
 485         if (s_dcert_file != NULL)
 486                 {
 487                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
 488                         goto end;
 489                 }
 490
 491 #if 1
 492         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 493 #else
 494         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 495                 {
 496                 RSA *rsa;
 497
 498                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 499                 BIO_flush(bio_s_out);
 500
 501                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 502
 503                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 504                         {
 505                         ERR_print_errors(bio_err);
 506                         goto end;
 507                         }
 508                 RSA_free(rsa);
 509                 BIO_printf(bio_s_out,"\n");
 510                 }
 511 #endif
 512
 513         if (cipher != NULL)
 514                 SSL_CTX_set_cipher_list(ctx,cipher);
 515         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
 516
 517         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
 518
 519         BIO_printf(bio_s_out,"ACCEPT\n");
 520         if (www)
 521                 do_server(port,&accept_socket,www_body, context);
 522         else
 523                 do_server(port,&accept_socket,sv_body, context);
 524         print_stats(bio_s_out,ctx);
 525         ret=0;
 526 end:
 527         if (ctx != NULL) SSL_CTX_free(ctx);
 528         if (bio_s_out != NULL)
 529                 {
 530                 BIO_free(bio_s_out);
 531                 bio_s_out=NULL;
 532                 }
 533         EXIT(ret);
 534         }
 535
 536 static void print_stats(bio,ssl_ctx)
 537 BIO *bio;
 538 SSL_CTX *ssl_ctx;
 539         {
 540         BIO_printf(bio,"%4ld items in the session cache\n",
 541                 SSL_CTX_sess_number(ssl_ctx));
 542         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 543                 SSL_CTX_sess_connect(ssl_ctx));
 544         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
 545                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
 546         BIO_printf(bio,"%4d client connects that finished\n",
 547                 SSL_CTX_sess_connect_good(ssl_ctx));
 548         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 549                 SSL_CTX_sess_accept(ssl_ctx));
 550         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
 551                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
 552         BIO_printf(bio,"%4d server accepts that finished\n",
 553                 SSL_CTX_sess_accept_good(ssl_ctx));
 554         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 555         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 556         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 557         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 558         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
 559                 SSL_CTX_sess_cache_full(ssl_ctx),
 560                 SSL_CTX_sess_get_cache_size(ssl_ctx));
 561         }
 562
 563 static int sv_body(hostname, s, context)
 564 char *hostname;
 565 int s;
 566 char *context;
 567         {
 568         char *buf=NULL;
 569         fd_set readfds;
 570         int ret=1,width;
 571         int k,i;
 572         unsigned long l;
 573         SSL *con=NULL;
 574         BIO *sbio;
 575
 576         if ((buf=Malloc(bufsize)) == NULL)
 577                 {
 578                 BIO_printf(bio_err,"out of memory\n");
 579                 goto err;
 580                 }
 581 #ifdef FIONBIO
 582         if (s_nbio)
 583                 {
 584                 unsigned long sl=1;
 585
 586                 if (!s_quiet)
 587                         BIO_printf(bio_err,"turning on non blocking io\n");
 588                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 589                         ERR_print_errors(bio_err);
 590                 }
 591 #endif
 592
 593         if (con == NULL) {
 594                 con=(SSL *)SSL_new(ctx);
 595                 if(context)
 596                       SSL_set_session_id_context(con, context, strlen(context));
 597         }
 598         SSL_clear(con);
 599
 600         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 601         if (s_nbio_test)
 602                 {
 603                 BIO *test;
 604
 605                 test=BIO_new(BIO_f_nbio_test());
 606                 sbio=BIO_push(test,sbio);
 607                 }
 608         SSL_set_bio(con,sbio,sbio);
 609         SSL_set_accept_state(con);
 610         /* SSL_set_fd(con,s); */
 611
 612         if (s_debug)
 613                 {
 614                 con->debug=1;
 615                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 616                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 617                 }
 618
 619         width=s+1;
 620         for (;;)
 621                 {
 622                 FD_ZERO(&readfds);
 623 #ifndef WINDOWS
 624                 FD_SET(fileno(stdin),&readfds);
 625 #endif
 626                 FD_SET(s,&readfds);
 627                 i=select(width,&readfds,NULL,NULL,NULL);
 628                 if (i <= 0) continue;
 629                 if (FD_ISSET(fileno(stdin),&readfds))
 630                         {
 631                         i=read(fileno(stdin),buf,bufsize);
 632                         if (!s_quiet)
 633                                 {
 634                                 if ((i <= 0) || (buf[0] == 'Q'))
 635                                         {
 636                                         BIO_printf(bio_s_out,"DONE\n");
 637                                         SHUTDOWN(s);
 638                                         close_accept_socket();
 639                                         ret= -11;
 640                                         goto err;
 641                                         }
 642                                 if ((i <= 0) || (buf[0] == 'q'))
 643                                         {
 644                                         BIO_printf(bio_s_out,"DONE\n");
 645                                         SHUTDOWN(s);
 646         /*                              close_accept_socket();
 647                                         ret= -11;*/
 648                                         goto err;
 649                                         }
 650                                 if ((buf[0] == 'r') &&
 651                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 652                                         {
 653                                         SSL_renegotiate(con);
 654                                         i=SSL_do_handshake(con);
 655                                         printf("SSL_do_handshake -> %d\n",i);
 656                                         i=0; /*13; */
 657                                         continue;
 658                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
 659                                         }
 660                                 if ((buf[0] == 'R') &&
 661                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 662                                         {
 663                                         SSL_set_verify(con,
 664                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 665                                         SSL_renegotiate(con);
 666                                         i=SSL_do_handshake(con);
 667                                         printf("SSL_do_handshake -> %d\n",i);
 668                                         i=0; /* 13; */
 669                                         continue;
 670                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
 671                                         }
 672                                 if (buf[0] == 'P')
 673                                         {
 674                                         static char *str="Lets print some clear text\n";
 675                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 676                                         }
 677                                 if (buf[0] == 'S')
 678                                         {
 679                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 680                                         }
 681                                 }
 682                         l=k=0;
 683                         for (;;)
 684                                 {
 685                                 /* should do a select for the write */
 686 #ifdef RENEG
 687 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
 688 #endif
 689                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 690                                 switch (SSL_get_error(con,k))
 691                                         {
 692                                 case SSL_ERROR_NONE:
 693                                         break;
 694                                 case SSL_ERROR_WANT_WRITE:
 695                                 case SSL_ERROR_WANT_READ:
 696                                 case SSL_ERROR_WANT_X509_LOOKUP:
 697                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 698                                         break;
 699                                 case SSL_ERROR_SYSCALL:
 700                                 case SSL_ERROR_SSL:
 701                                         BIO_printf(bio_s_out,"ERROR\n");
 702                                         ERR_print_errors(bio_err);
 703                                         ret=1;
 704                                         goto err;
 705                                         /* break; */
 706                                 case SSL_ERROR_ZERO_RETURN:
 707                                         BIO_printf(bio_s_out,"DONE\n");
 708                                         ret=1;
 709                                         goto err;
 710                                         }
 711                                 l+=k;
 712                                 i-=k;
 713                                 if (i <= 0) break;
 714                                 }
 715                         }
 716                 if (FD_ISSET(s,&readfds))
 717                         {
 718                         if (!SSL_is_init_finished(con))
 719                                 {
 720                                 i=init_ssl_connection(con);
 721
 722                                 if (i < 0)
 723                                         {
 724                                         ret=0;
 725                                         goto err;
 726                                         }
 727                                 else if (i == 0)
 728                                         {
 729                                         ret=1;
 730                                         goto err;
 731                                         }
 732                                 }
 733                         else
 734                                 {
 735 again:
 736                                 i=SSL_read(con,(char *)buf,bufsize);
 737                                 switch (SSL_get_error(con,i))
 738                                         {
 739                                 case SSL_ERROR_NONE:
 740                                         write(fileno(stdout),buf,
 741                                                 (unsigned int)i);
 742                                         if (SSL_pending(con)) goto again;
 743                                         break;
 744                                 case SSL_ERROR_WANT_WRITE:
 745                                 case SSL_ERROR_WANT_READ:
 746                                 case SSL_ERROR_WANT_X509_LOOKUP:
 747                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 748                                         break;
 749                                 case SSL_ERROR_SYSCALL:
 750                                 case SSL_ERROR_SSL:
 751                                         BIO_printf(bio_s_out,"ERROR\n");
 752                                         ERR_print_errors(bio_err);
 753                                         ret=1;
 754                                         goto err;
 755                                 case SSL_ERROR_ZERO_RETURN:
 756                                         BIO_printf(bio_s_out,"DONE\n");
 757                                         ret=1;
 758                                         goto err;
 759                                         }
 760                                 }
 761                         }
 762                 }
 763 err:
 764         BIO_printf(bio_s_out,"shutting down SSL\n");
 765 #if 1
 766         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 767 #else
 768         SSL_shutdown(con);
 769 #endif
 770         if (con != NULL) SSL_free(con);
 771         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 772         if (buf != NULL)
 773                 {
 774                 memset(buf,0,bufsize);
 775                 Free(buf);
 776                 }
 777         if (ret >= 0)
 778                 BIO_printf(bio_s_out,"ACCEPT\n");
 779         return(ret);
 780         }
 781
 782 static void close_accept_socket()
 783         {
 784         BIO_printf(bio_err,"shutdown accept socket\n");
 785         if (accept_socket >= 0)
 786                 {
 787                 SHUTDOWN2(accept_socket);
 788                 }
 789         }
 790
 791 static int init_ssl_connection(con)
 792 SSL *con;
 793         {
 794         int i;
 795         const char *str;
 796         X509 *peer;
 797         long verify_error;
 798         MS_STATIC char buf[BUFSIZ];
 799
 800         if ((i=SSL_accept(con)) <= 0)
 801                 {
 802                 if (BIO_sock_should_retry(i))
 803                         {
 804                         BIO_printf(bio_s_out,"DELAY\n");
 805                         return(1);
 806                         }
 807
 808                 BIO_printf(bio_err,"ERROR\n");
 809                 verify_error=SSL_get_verify_result(con);
 810                 if (verify_error != X509_V_OK)
 811                         {
 812                         BIO_printf(bio_err,"verify error:%s\n",
 813                                 X509_verify_cert_error_string(verify_error));
 814                         }
 815                 else
 816                         ERR_print_errors(bio_err);
 817                 return(0);
 818                 }
 819
 820         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 821
 822         peer=SSL_get_peer_certificate(con);
 823         if (peer != NULL)
 824                 {
 825                 BIO_printf(bio_s_out,"Client certificate\n");
 826                 PEM_write_bio_X509(bio_s_out,peer);
 827                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 828                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 829                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 830                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 831                 X509_free(peer);
 832                 }
 833
 834         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 835                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 836         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 837         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 838         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 839         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
 840                 TLS1_FLAGS_TLS_PADDING_BUG)
 841                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
 842
 843         return(1);
 844         }
 845
 846 #ifndef NO_DH
 847 static DH *load_dh_param()
 848         {
 849         DH *ret=NULL;
 850         BIO *bio;
 851
 852         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 853                 goto err;
 854         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 855 err:
 856         if (bio != NULL) BIO_free(bio);
 857         return(ret);
 858         }
 859 #endif
 860
 861 #if 0
 862 static int load_CA(ctx,file)
 863 SSL_CTX *ctx;
 864 char *file;
 865         {
 866         FILE *in;
 867         X509 *x=NULL;
 868
 869         if ((in=fopen(file,"r")) == NULL)
 870                 return(0);
 871
 872         for (;;)
 873                 {
 874                 if (PEM_read_X509(in,&x,NULL) == NULL)
 875                         break;
 876                 SSL_CTX_add_client_CA(ctx,x);
 877                 }
 878         if (x != NULL) X509_free(x);
 879         fclose(in);
 880         return(1);
 881         }
 882 #endif
 883
 884 static int www_body(hostname, s, context)
 885 char *hostname;
 886 int s;
 887 char *context;
 888         {
 889         char *buf=NULL;
 890         int ret=1;
 891         int i,j,k,blank,dot;
 892         struct stat st_buf;
 893         SSL *con;
 894         SSL_CIPHER *c;
 895         BIO *io,*ssl_bio,*sbio;
 896         long total_bytes;
 897
 898         buf=Malloc(bufsize);
 899         if (buf == NULL) return(0);
 900         io=BIO_new(BIO_f_buffer());
 901         ssl_bio=BIO_new(BIO_f_ssl());
 902         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 903
 904 #ifdef FIONBIO
 905         if (s_nbio)
 906                 {
 907                 unsigned long sl=1;
 908
 909                 if (!s_quiet)
 910                         BIO_printf(bio_err,"turning on non blocking io\n");
 911                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 912                         ERR_print_errors(bio_err);
 913                 }
 914 #endif
 915
 916         /* lets make the output buffer a reasonable size */
 917         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
 918
 919         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 920         if(context) SSL_set_session_id_context(con, context, strlen(context));
 921
 922         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 923         if (s_nbio_test)
 924                 {
 925                 BIO *test;
 926
 927                 test=BIO_new(BIO_f_nbio_test());
 928                 sbio=BIO_push(test,sbio);
 929                 }
 930         SSL_set_bio(con,sbio,sbio);
 931         SSL_set_accept_state(con);
 932
 933         /* SSL_set_fd(con,s); */
 934         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 935         BIO_push(io,ssl_bio);
 936
 937         if (s_debug)
 938                 {
 939                 con->debug=1;
 940                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 941                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 942                 }
 943
 944         blank=0;
 945         for (;;)
 946                 {
 947                 if (hack)
 948                         {
 949                         i=SSL_accept(con);
 950
 951                         switch (SSL_get_error(con,i))
 952                                 {
 953                         case SSL_ERROR_NONE:
 954                                 break;
 955                         case SSL_ERROR_WANT_WRITE:
 956                         case SSL_ERROR_WANT_READ:
 957                         case SSL_ERROR_WANT_X509_LOOKUP:
 958                                 continue;
 959                         case SSL_ERROR_SYSCALL:
 960                         case SSL_ERROR_SSL:
 961                         case SSL_ERROR_ZERO_RETURN:
 962                                 ret=1;
 963                                 goto err;
 964                                 /* break; */
 965                                 }
 966
 967                         SSL_renegotiate(con);
 968                         SSL_write(con,NULL,0);
 969                         }
 970
 971                 i=BIO_gets(io,buf,bufsize-1);
 972                 if (i < 0) /* error */
 973                         {
 974                         if (!BIO_should_retry(io))
 975                                 {
 976                                 if (!s_quiet)
 977                                         ERR_print_errors(bio_err);
 978                                 goto err;
 979                                 }
 980                         else
 981                                 {
 982                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 983 #ifndef MSDOS
 984                                 sleep(1);
 985 #endif
 986                                 continue;
 987                                 }
 988                         }
 989                 else if (i == 0) /* end of input */
 990                         {
 991                         ret=1;
 992                         goto end;
 993                         }
 994
 995                 /* else we have data */
 996                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 997                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
 998                         {
 999                         char *p;
1000                         X509 *peer;
1001                         STACK_OF(SSL_CIPHER) *sk;
1002                         static char *space="                          ";
1003
1004                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1005                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
1006                         BIO_puts(io,"<pre>\n");
1007 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
1008                         BIO_puts(io,"\n");
1009                         for (i=0; i<local_argc; i++)
1010                                 {
1011                                 BIO_puts(io,local_argv[i]);
1012                                 BIO_write(io," ",1);
1013                                 }
1014                         BIO_puts(io,"\n");
1015
1016                         /* The following is evil and should not really
1017                          * be done */
1018                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1019                         sk=SSL_get_ciphers(con);
1020                         j=sk_SSL_CIPHER_num(sk);
1021                         for (i=0; i<j; i++)
1022                                 {
1023                                 c=sk_SSL_CIPHER_value(sk,i);
1024                                 BIO_printf(io,"%-11s:%-25s",
1025                                         SSL_CIPHER_get_version(c),
1026                                         SSL_CIPHER_get_name(c));
1027                                 if ((((i+1)%2) == 0) && (i+1 != j))
1028                                         BIO_puts(io,"\n");
1029                                 }
1030                         BIO_puts(io,"\n");
1031                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1032                         if (p != NULL)
1033                                 {
1034                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1035                                 j=i=0;
1036                                 while (*p)
1037                                         {
1038                                         if (*p == ':')
1039                                                 {
1040                                                 BIO_write(io,space,26-j);
1041                                                 i++;
1042                                                 j=0;
1043                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1044                                                 }
1045                                         else
1046                                                 {
1047                                                 BIO_write(io,p,1);
1048                                                 j++;
1049                                                 }
1050                                         p++;
1051                                         }
1052                                 BIO_puts(io,"\n");
1053                                 }
1054                         BIO_printf(io,((con->hit)
1055                                 ?"---\nReused, "
1056                                 :"---\nNew, "));
1057                         c=SSL_get_current_cipher(con);
1058                         BIO_printf(io,"%s, Cipher is %s\n",
1059                                 SSL_CIPHER_get_version(c),
1060                                 SSL_CIPHER_get_name(c));
1061                         SSL_SESSION_print(io,SSL_get_session(con));
1062                         BIO_printf(io,"---\n");
1063                         print_stats(io,SSL_get_SSL_CTX(con));
1064                         BIO_printf(io,"---\n");
1065                         peer=SSL_get_peer_certificate(con);
1066                         if (peer != NULL)
1067                                 {
1068                                 BIO_printf(io,"Client certificate\n");
1069                                 X509_print(io,peer);
1070                                 PEM_write_bio_X509(io,peer);
1071                                 }
1072                         else
1073                                 BIO_puts(io,"no client certificate available\n");
1074                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1075                         break;
1076                         }
1077                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1078                         {
1079                         BIO *file;
1080                         char *p,*e;
1081                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1082
1083                         /* skip the '/' */
1084                         p= &(buf[5]);
1085                         dot=0;
1086                         for (e=p; *e != '\0'; e++)
1087                                 {
1088                                 if (e[0] == ' ') break;
1089                                 if (    (e[0] == '.') &&
1090                                         (strncmp(&(e[-1]),"/../",4) == 0))
1091                                         dot=1;
1092                                 }
1093
1094
1095                         if (*e == '\0')
1096                                 {
1097                                 BIO_puts(io,text);
1098                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1099                                 break;
1100                                 }
1101                         *e='\0';
1102
1103                         if (dot)
1104                                 {
1105                                 BIO_puts(io,text);
1106                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1107                                 break;
1108                                 }
1109
1110                         if (*p == '/')
1111                                 {
1112                                 BIO_puts(io,text);
1113                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1114                                 break;
1115                                 }
1116
1117                         /* append if a directory lookup */
1118                         if (e[-1] == '/')
1119                                 strcat(p,"index.html");
1120
1121                         /* if a directory, do the index thang */
1122                         if (stat(p,&st_buf) < 0)
1123                                 {
1124                                 BIO_puts(io,text);
1125                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1126                                 ERR_print_errors(io);
1127                                 break;
1128                                 }
1129                         if (S_ISDIR(st_buf.st_mode))
1130                                 {
1131                                 strcat(p,"/index.html");
1132                                 }
1133
1134                         if ((file=BIO_new_file(p,"r")) == NULL)
1135                                 {
1136                                 BIO_puts(io,text);
1137                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1138                                 ERR_print_errors(io);
1139                                 break;
1140                                 }
1141
1142                         if (!s_quiet)
1143                                 BIO_printf(bio_err,"FILE:%s\n",p);
1144
1145                         i=strlen(p);
1146                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1147                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1148                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1149                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1150                         else
1151                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1152                         /* send the file */
1153                         total_bytes=0;
1154                         for (;;)
1155                                 {
1156                                 i=BIO_read(file,buf,bufsize);
1157                                 if (i <= 0) break;
1158
1159 #ifdef RENEG
1160                                 total_bytes+=i;
1161                                 fprintf(stderr,"%d\n",i);
1162                                 if (total_bytes > 3*1024)
1163                                         {
1164                                         total_bytes=0;
1165                                         fprintf(stderr,"RENEGOTIATE\n");
1166                                         SSL_renegotiate(con);
1167                                         }
1168 #endif
1169
1170                                 for (j=0; j<i; )
1171                                         {
1172 #ifdef RENEG
1173 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1174 #endif
1175                                         k=BIO_write(io,&(buf[j]),i-j);
1176                                         if (k <= 0)
1177                                                 {
1178                                                 if (!BIO_should_retry(io))
1179                                                         goto write_error;
1180                                                 else
1181                                                         {
1182                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1183                                                         }
1184                                                 }
1185                                         else
1186                                                 {
1187                                                 j+=k;
1188                                                 }
1189                                         }
1190                                 }
1191 write_error:
1192                         BIO_free(file);
1193                         break;
1194                         }
1195                 }
1196
1197         for (;;)
1198                 {
1199                 i=(int)BIO_flush(io);
1200                 if (i <= 0)
1201                         {
1202                         if (!BIO_should_retry(io))
1203                                 break;
1204                         }
1205                 else
1206                         break;
1207                 }
1208 end:
1209 #if 1
1210         /* make sure we re-use sessions */
1211         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1212 #else
1213         /* This kills performace */
1214 /*      SSL_shutdown(con); A shutdown gets sent in the
1215  *      BIO_free_all(io) procession */
1216 #endif
1217
1218 err:
1219
1220         if (ret >= 0)
1221                 BIO_printf(bio_s_out,"ACCEPT\n");
1222
1223         if (buf != NULL) Free(buf);
1224         if (io != NULL) BIO_free_all(io);
1225 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1226         return(ret);
1227         }
1228
1229 static RSA MS_CALLBACK *tmp_rsa_cb(s,export,keylength)
1230 SSL *s;
1231 int export;
1232 int keylength;
1233         {
1234         static RSA *rsa_tmp=NULL;
1235
1236         if (rsa_tmp == NULL)
1237                 {
1238                 if (!s_quiet)
1239                         {
1240                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1241                         BIO_flush(bio_err);
1242                         }
1243 #ifndef NO_RSA
1244                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1245 #endif
1246                 if (!s_quiet)
1247                         {
1248                         BIO_printf(bio_err,"\n");
1249                         BIO_flush(bio_err);
1250                         }
1251                 }
1252         return(rsa_tmp);
1253         }